import axios from 'axios';
import { ElMessage, ElMessageBox, ElNotification } from 'element-plus';
import store from '@/store';
import { getToken } from '@/utils/auth';
import errorCode from '@/utils/errorCode';

export let isReLogin = { show: false };

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8';

// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: import.meta.env.VITE_APP_BASE_API,
  // 超时
  timeout: 20000,
});

// request拦截器
service.interceptors.request.use(
  (config) => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false;
    if (getToken() && !isToken) {
      config.headers['Authorization'] = 'Bearer ' + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    return config;
  },
  (error) => {
    Promise.reject(error);
  },
);

// 响应拦截器
service.interceptors.response.use(
  (res) => {
    // 导出
    const headers = res.headers;
    if (headers['content-type'] === 'application/octet-stream;charset=utf-8') {
      return res.data;
    }

    // 未设置状态码则默认成功状态
    const code = res.data.code || 200;
    // 获取错误信息
    const message = errorCode[code] || res.data.msg || errorCode['default'];
    if (code === 401) {
      ElMessageBox.confirm('用户已登录或状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
        confirmButtonText: '重新登录',
        cancelButtonText: '取消',
        type: 'warning',
      }).then(() => {
        store.dispatch('LogOut').then(() => {
          // location.reload() // 为了重新实例化vue-router对象 避免bug
          location.href = '/index';
        });
      });
    } else if (code === 500) {
      ElMessage({
        message: message,
        type: 'error',
      });
      return Promise.reject(new Error(message));
    } else if (code !== 200) {
      ElNotification.error({
        title: message,
      });
      return Promise.reject('error');
    } else {
      return res.data;
    }
  },
  (error) => {
    console.log('err' + error);
    ElMessage({
      message: error.message,
      type: 'error',
      duration: 5 * 1000,
    });
    return Promise.reject(error);
  },
);

// 通用下载方法
export function download(url, params, filename) {
  return service
    .post(url, params, {
      responseType: 'blob',
    })
    .then((data) => {
      const blob = new Blob([data]);
      if ('download' in document.createElement('a')) {
        const elink = document.createElement('a');
        elink.download = filename;
        elink.style.display = 'none';
        elink.href = URL.createObjectURL(blob);
        document.body.appendChild(elink);
        elink.click();
        URL.revokeObjectURL(elink.href);
        document.body.removeChild(elink);
      } else {
        navigator.msSaveBlob(blob, filename);
      }
    })
    .catch((r) => {
      console.error(r);
    });
}

export default service;
